ADV. firmly, tight/tightly | together Clamp the pieces of wood together while the glue sets.
PREP. around/round She clamped her arms around him. | on/onto He clamped his hand firmly onto Jack's shoulder. | over A large hand clamped over her mouth. | to The dog's jaws werwe clamped to his leg.
PHRASES clamped between your teeth He had a large cigar clamped between his teeth. | clamp shut His mouth clamped shut. PHRASAL VERBS clamp down
PREP. on to clamp down hard on bullying